Lock-nut.



No. 748,027. PATENTBD DB0. 29, 190s.

W. c. SWIFT.

LOCK NUT.

APPLIOATION FILED JUNE 1, 1903.

NO MODEL.

Patented December 29, 1903.

PATENT OFFICE.

tWILLIS C. SWIFT, OF CHICAGO, ILLINOIS.

LOCK-NUT.

SPECIFICATION forming part of Letters Patent N 0. 748,027, datedDecember 29, 1903.

Application filed June 1, 1903. Serial No. 159,541. (No model.)

To a/ZZ whom it may concern:

Beit known that LWILLIs C. SWIFT, acitizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Lock-Nuts, of which thefollowing is a specification.

My invention relates to lock-nuts, and has for its object to provide anew and improved device of this description.

My invention is illustrated in the accompanying drawings, wherein-Figure l is an end view of a bolt provided with a nut embodying myinvention. Fig. 2 isa section on line 2 2, Fig. 1. Fig. 3 is a side viewof the nut. Fig. 4. is a plan view of the inner part of the nut. Fig. 5is aside View of Fig. 4.

Like letters refer to like parts throughout the several figures.

I have illustrated in the drawings one form of device embodying myinvention andhave shown the lock-nut in connection with an ordinary boltA, passing through the parts B and C, which represents the devices inconnection with which the bolt is used.` On the threaded end of the boltis an outer unthreaded part D and an inner threaded part E. The part Dis provided with a non-circular opening, and at least a portion of theinner face of said part is beveled or inclined. The part E is providedwith an exterior corresponding to the interior face of the part D. Theinner part E is provided at its inner and smaller end with a continuousring E. This ring has a projecting part or standard E2, to which areexibly connected the two wings E3 and E4. The wings E3 and E4 areseparated from the ring by the space E5 and from each other by the spaceE6. The parts may be arranged or formed in any desired manner. If, forexample, the device is made for malleable material or wrought-iron, theprojecting part or standard E2 may be integral with the ring E. Asherein shown, the inner part E is tapered from `its outer end toward itsinner end, and the ring Eis made, preferably, of the same exteriordiameter as the interior diameter of the outer part at its inner orsmaller end, so that said ring simply acts as a guide to keep the outerpart true and insure the proper alinement and engagement with the bolt.

When the device is used, the part E is placed within the part D. Thepart D i's then rotated, carrying with it the part E. When the part Dstrikes a suitable stop-as, for example, the face of the part C-acontinued rotation thereof forces the part E inwardly and compresses thewings E3 and E4, so as to cause them to clamp the threads of the bolt,thus locking the nut in position.

I claim- 1. A locknut, comprising an outer unthreaded part, an innerthreaded part, the two parts connected so as to rotate together, saidinner part provided with a ring having a projecting standard, two wingshinged or exibly connected with said standard, and means for compressingsaid wings so that the threads thereon clamp the threads of the boltwhen the parts are in their locking position.

2. A lock-nut, comprising an outer unthreaded part, having anon-circular opening, at least a portion of the face thereof beingbeveled or inclined, an inner threaded part having an exterior shaped tocorrespond with the inner face of the outer part, said inner partprovided at its inner end with a continuous ring, a projecting standardintegral therewith, and two Wings hinged or flexibly connected with saidstandard and adapted to be compressed so that the threads thereon.

clampV the threads of the bolt when the inner part is forced into theouter part.

3. A lock-nut, comprising an outer unthreaded part, having an innernon-circular engaging face, at least a portion of which is inclined orbeveled, an inner threaded part having a continuous ring, provided witha projecting standard,two Wings hinged or flexibly connected to saidstandard and shaped exteriorly to correspond with the inner engagingface of the outer part, so that when the inner part is forced into theouter' part the wings will be compressed to clamp the threads of thebolt, said ring "on the inner part having a diameter substantially thesame as the smallest inner diameter of the outer part, so as to act as aguide for the inner part.

WILLIS C. SWIFT.

Witnesses:

HOMEE L. KRAFT, FANNY B. FAY.

